lower side band

简明释义

下边带

英英释义

例句

1.Using the lower side band 下边带 can help in avoiding crowded frequencies.

使用 下边带 lower side band 可以帮助避免拥挤的频率。

2.When tuning your radio, make sure to select the lower side band 下边带 mode for clearer reception.

调节收音机时，请确保选择 下边带 lower side band 模式以获得更清晰的接收效果。

3.Amateur radio operators often utilize the lower side band 下边带 for long-distance communication.

业余无线电操作员经常利用 下边带 lower side band 进行远距离通信。

4.The lower side band 下边带 is crucial for reducing interference in certain frequencies.

在某些频率下，下边带 lower side band 对于减少干扰至关重要。

5.In radio communications, the lower side band 下边带 is often used for voice transmissions.

在无线电通信中，下边带 lower side band 通常用于语音传输。

作文

In the world of radio communications, understanding various technical terms is crucial for effective communication. One such term is lower side band, which plays an important role in amplitude modulation (AM) and single sideband (SSB) transmission. To grasp what lower side band means, we first need to understand the basics of modulation. Modulation is a technique used to encode information onto a carrier wave by varying its amplitude, frequency, or phase. In AM, the amplitude of the carrier wave is varied in accordance with the information signal. However, this method can be inefficient, as it transmits both upper and lower sidebands along with the carrier frequency. This is where SSB comes into play. SSB is a refinement of AM that eliminates the carrier and one of the sidebands, allowing for more efficient use of bandwidth.The lower side band refers specifically to the portion of the spectrum that lies below the carrier frequency. For instance, if a carrier frequency is set at 10 MHz, the lower side band would encompass frequencies from 9.5 MHz down to zero. By transmitting only the lower side band, operators can effectively utilize the available bandwidth while reducing power consumption and improving signal clarity. This makes SSB a popular choice among amateur radio operators and commercial broadcasters alike.One of the key advantages of using the lower side band is its ability to minimize interference. Since only one sideband is transmitted, there is less chance of overlapping signals, which can lead to clearer communication. Additionally, the lower side band is particularly useful in long-distance communications, where signal degradation can occur. By focusing on the lower side band, operators can enhance their ability to transmit over vast distances without losing the quality of the signal.Furthermore, the lower side band is often favored in certain types of radio operations, such as marine and aviation communications. These fields require reliable and clear communication, often in challenging environments. The use of SSB, and specifically the lower side band, allows for effective communication even when conditions are less than ideal.In conclusion, the term lower side band holds significant importance in the realm of radio communications. It represents a method of transmitting information efficiently while minimizing interference and maximizing clarity. Understanding concepts like lower side band is essential for anyone interested in radio technology, whether they are enthusiasts, professionals, or simply curious about how communication works. As technology continues to evolve, the principles surrounding lower side band and SSB transmission will remain relevant, ensuring that effective communication persists in our increasingly connected world.

在无线电通信的世界中，理解各种技术术语对于有效沟通至关重要。一个这样的术语是lower side band，它在调幅（AM）和单边带（SSB）传输中发挥着重要作用。要理解lower side band的含义，我们首先需要了解调制的基本知识。调制是一种通过改变载波的幅度、频率或相位来将信息编码到载波波形上的技术。在AM中，载波波形的幅度根据信息信号的变化而变化。然而，这种方法可能效率低下，因为它同时传输载波频率以及上下边带。这就是SSB派上用场的地方。SSB是AM的一种改进，它消除了载波和一个边带，从而允许更有效地使用带宽。lower side band特指位于载波频率之下的频谱部分。例如，如果载波频率设定为10 MHz，则lower side band将涵盖从9.5 MHz到零的频率。通过仅传输lower side band，操作员可以有效利用可用带宽，同时减少功耗并提高信号清晰度。这使得SSB成为业余无线电爱好者和商业广播者的热门选择。使用lower side band的一个关键优势是能够最小化干扰。由于仅传输一个边带，因此重叠信号的可能性较小，从而可以实现更清晰的通信。此外，lower side band在长距离通信中尤其有用，因为信号可能会退化。通过专注于lower side band，操作员可以增强他们在广阔距离上传输信号而不失去信号质量的能力。此外，lower side band在某些类型的无线电操作中通常受到青睐，例如海洋和航空通信。这些领域需要可靠和清晰的通信，通常在具有挑战性的环境中。使用SSB，特别是lower side band，可以确保即使在条件不理想时也能有效沟通。总之，术语lower side band在无线电通信领域具有重要意义。它代表了一种有效传输信息的方法，同时最小化干扰并最大化清晰度。理解像lower side band这样的概念对于任何对无线电技术感兴趣的人来说都是必不可少的，无论他们是爱好者、专业人士，还是只是对通信如何工作感到好奇。随着技术的不断发展，围绕lower side band和SSB传输的原理将继续保持相关性，确保在我们日益互联的世界中有效沟通的持续存在。